#include<stdio.h> 
void main() { 
    int x,y,t;  
    printf("Enter x,y:\n"); 
    scanf("%d %d",&x,&y);
    printf("x=%d y=%d\n",x,y);  
    t=x;x=y;y=t;  
    printf("x=%d y=%d\n",x,y);
    }